#!/usr/bin/env/python3
# Copyright (c) Facebook, Inc. and its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
name: Inference
description: Makes Inference request.
inputs:
- {name: Host Name, description: 'Host name of inference service'}
- {name: Cookie, description: 'Authentication token'}
- {name: Url, description: 'Prediction endpoing url'}
- {name: Model, description: 'Model name'}
- {name: Inference Type, description: 'Predict or Explain'}
- {name: Input Request, description: 'Input request json'}
outputs:
- {name: MLPipeline UI Metadata, description: 'MLPipeline UI Metadata output'}
implementation:
  container:
    image: public.ecr.aws/pytorch-samples/alpine:latest
    command:
    - sh
    - -ex
    - -c
    - |
      host_name="$0"
      input_request="$1"
      output_metadata_path="$2"
      cookie="$3"
      url="$4"
      model="$5"
      inference_type="$6"

      mkdir -p "$(dirname "$output_metadata_path")"
      curl $input_request > /tmp/input.json
      curl -v -H "Host: ${host_name}" -H "Cookie: ${cookie}" "${url}/v2/models/${model}/${inference_type}" -d @./tmp/input.json > /tmp/output.json

      input=$(cat /tmp/input.json | jq '.| tostring' | sed -e "s/^.\{1\}/&## Request: \\\n\`\`\`json\\\n/" -e "s/.$/\\\n\`\`\`\"/")
      output=$(cat /tmp/output.json | jq '.| tostring' | sed -e "s/^.\{1\}/&## Response: \\\n\`\`\`json\\\n/" -e "s/.$/\\\n\`\`\`\"/")

      echo '{
            "outputs" : [
              {
                "storage": "inline",
                "source": '"$input"',
                "type": "markdown"
              },
              {
                "storage": "inline",
                "source": '"$output"',
                "type": "markdown"
              }
           ]
          }'  > "$output_metadata_path"

    - {inputValue: Host Name}
    - {inputValue: Input Request}
    - {outputPath: MLPipeline UI Metadata}
    - {inputValue: Cookie}
    - {inputValue: Url}
    - {inputValue: Model}
    - {inputValue: Inference Type}